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authorTorben Hohn <torbenh@gmx.de>2011-01-27 15:00:12 (GMT)
committerThomas Gleixner <tglx@linutronix.de>2011-02-09 15:17:24 (GMT)
commit22b7fcdae562b6792b3f5517e89fd7e0337180ae (patch)
tree0fc27558c04d63b4d7bea7e34e0f0b2535993d10 /arch/mn10300
parent0606f422b453f76c31ab2b1bd52943ff06a2dcf2 (diff)
downloadlinux-22b7fcdae562b6792b3f5517e89fd7e0337180ae.tar.xz
mn10300: Switch do_timer() to xtimer_update()
Only one CPU gets the timer interrupt so mn10300_last_tsc does not need to be protected by xtime lock. Remove xtime lovking and use xtime_update() which does the locking itself. Signed-off-by: Torben Hohn <torbenh@gmx.de> Cc: David Howells <dhowells@redhat.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> LKML-Reference: <20110127150011.23248.62040.stgit@localhost> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/mn10300')
-rw-r--r--arch/mn10300/kernel/time.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/mn10300/kernel/time.c b/arch/mn10300/kernel/time.c
index 75da468..5b95500 100644
--- a/arch/mn10300/kernel/time.c
+++ b/arch/mn10300/kernel/time.c
@@ -104,8 +104,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
unsigned tsc, elapse;
irqreturn_t ret;
- write_seqlock(&xtime_lock);
-
while (tsc = get_cycles(),
elapse = tsc - mn10300_last_tsc, /* time elapsed since last
* tick */
@@ -114,11 +112,9 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
mn10300_last_tsc += MN10300_TSC_PER_HZ;
/* advance the kernel's time tracking system */
- do_timer(1);
+ xtime_update(1);
}
- write_sequnlock(&xtime_lock);
-
ret = local_timer_interrupt();
#ifdef CONFIG_SMP
send_IPI_allbutself(LOCAL_TIMER_IPI);